Patella fracture threading device with threading, tightening and knotting functions

A technology for patella fracture and wire-passing device, applied in the direction of fixator, internal fixator, internal bone synthesis, etc., can solve the problems that manual operation cannot guarantee the degree of tightening, the process is cumbersome and time-consuming, and the threading process is difficult, etc., and achieves real-time accuracy. Master the tightening force, the tightening effect is good, and the speed is fast

Pending Publication Date: 2022-07-05
中国人民解放军联勤保障部队第九二〇医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the surgical methods for patella fractures are mainly divided into the following types: wire purse string suture internal fixation, steel wire internal fixation, screw internal fixation, etc.; in internal fixation of patella fractures, it is often necessary to use steel wire or thread for stump fixation. It is necessary to pass the steel wire or wire through the patella between the patella and the femur, but when performing this operation at present, there are the following problems: 1) the structure of the current patella threader is s

Method used

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  • Patella fracture threading device with threading, tightening and knotting functions
  • Patella fracture threading device with threading, tightening and knotting functions
  • Patella fracture threading device with threading, tightening and knotting functions

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Experimental program
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Effect test

Embodiment 1

[0044] see Figure 1 to Figure 10 As shown in the figure, a patella fracture wire passing device with functions of threading and tightening and knotting includes: a handle 1, a connecting rod 2, an arc rod 3, a transition section 4, a micro motor 5, an outer cylinder 6, and a rotating shaft rod 7. Injection pipe 8;

[0045] The left end of the handle 1 is fixedly connected to the connecting rod 2, and the left end of the connecting rod 2 is detachably connected to the arc-segment rod 3, wherein the arc-segment rod 3 is divided into several sections, and each section can be hingedly connected, and the rightmost section is the one The arc segment rod 3 is detachably connected to the left end of the above-mentioned connecting rod 2; the left end of the connecting rod 2 can also be detachably connected to the automatic knotting part, wherein the automatic knotting part is composed of the transition section 4, the micromotor 5, the outer cylinder 6, the rotating shaft rod 7 , the ...

Embodiment 2

[0053] Based on Embodiment 1, for the inner fixed wire knot, the collet 12 can also be used to cooperate with the wire knot fixing part of the plastic wire clip 16. The specific structure is that the wire knot fixing part is driven by the collet 12, the outer rod 13, and the collet. The rod 14, the spring 15, and the plastic wire clip 16 are formed; the outer cylinder 6 is provided with a collet transmission rod channel, the channel opening is connected to the outer rod 13, the outer rod 13 is hollow, and the collet transmission rod 14 passes through the collet transmission rod channel and Inside the outer rod 13, there are two collets 12, which are respectively connected to the outer rod 13 and the collet transmission rod 14; A spring 15 is connected between the end and the bottom end of the transmission rod channel of the collet; the plastic wire clip 16 is detachably placed between the two collets 12 .

Embodiment 3

[0055] Based on Embodiment 1, when the rotating shaft rod 7 drives the wire hook 701 to rotate, the torque can be monitored in real time by the torque sensor 9 of the micromotor 5, and the torque is converted into a digital signal by the D / A converter 11 after being processed by the built-in program of the microprocessor 10 for display. , it is convenient to accurately grasp the tightening force of the internal fixation wire or internal fixation wire.

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Abstract

The invention discloses a patella fracture threading device with threading and tightening knotting functions. The patella fracture threading device comprises a grab handle, a connecting rod, an arc section rod, a transition section, a micro motor, an outer cylinder, a rotating shaft rod, patella fixing claws and patella fixing clamps. The device can be used in an arthroscopic patella internal fixation operation, and also can be used in a tissue incision patella internal fixation operation; wherein the radian of the thread passing device can be automatically and flexibly adjusted according to the radian of the patella surface, so that the thread passing device can be better attached to the patella surface, and the obstruction during thread passing is reduced; according to the additionally designed knotting device part, a steel wire or a fixing line is tightened through electric control, and the position where the inner fixing line is tightened through medical thermoplastic resin is condensed and fixed. During knotting operation of an internal fixing wire or a steel wire, the tightening force can be monitored and mastered in real time, and an internal fixing wire knot can be pressed and fixed by using a plastic wire clamp; and the patella fixing clamp can be used for clamping and fixing the broken patella.

Description

technical field [0001] The invention belongs to the field of internal fixation instruments for patella fractures, and in particular relates to a patellar fracture wire-passing device with functions of threading and tightening and knotting. Background technique [0002] The cartilage surface of the patella forms a joint with the front of the femoral condyle, which helps to extend the knee. If a patella fracture occurs, it is a fracture of the internal joint. It is required to restore the complete normal anatomical relationship of the articular surface, and repair the quadriceps femoral aponeurosis. function and prevention of complications of osteoarthritis; [0003] At present, the surgical methods for patellar fractures are mainly divided into the following categories: wire purse-string internal fixation, wire internal fixation, screw internal fixation, etc.; in patellar fracture internal fixation, wire or wire is often used to fix the broken end. It is necessary to pass th...

Claims

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Application Information

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IPC IPC(8): A61B17/82A61B17/88
CPCA61B17/82A61B17/8861
Inventor 谭洪波吕晓雨丁伟张华张崇耀孙睿袁礼波王铭陈志安冯玉娇王令董双斌赵天宇施荣茂邱雄李安旭
Owner 中国人民解放军联勤保障部队第九二〇医院
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